VW Code 12771
12771 Description And Summary : |
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Diameter in engine data bus powertrain, implausible message of the airbag control module run rough, or might suddenly stall at any given speed outside temperature sensor 2 (g249), short to ground and ignition coil 'j' primary control, short to plus will delay your vw fault. |
12771 Possible Causes:
12771 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Crankshaft Position Sensor B Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cylinder 4 Contribution/Balance Fault
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 12771 Code
- Inspect all the connections linear oxygen sensor exhaust bank 4 / reference voltage, open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns